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<head><meta charset="utf-8"><title>I-prioritize #70963 regression on span for panics due to tra · t-compiler/wg-prioritization · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/index.html">t-compiler/wg-prioritization</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html">I-prioritize #70963 regression on span for panics due to tra</a></h3>

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<a name="193669323"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193669323" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> triagebot <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193669323">(Apr 11 2020 at 16:59)</a>:</h4>
<p><span class="user-group-mention" data-user-group-id="2403">@WG-prioritization</span> issue <a href="https://github.com/rust-lang/rust/issues/70963#issuecomment-612465121" title="https://github.com/rust-lang/rust/issues/70963#issuecomment-612465121">#70963</a> has been requested for prioritization.</p>



<a name="193787204"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193787204" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193787204">(Apr 13 2020 at 16:03)</a>:</h4>
<p>let's prioritize this one</p>



<a name="193787239"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193787239" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193787239">(Apr 13 2020 at 16:03)</a>:</h4>
<p>and test our async work :)</p>



<a name="193787530"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193787530" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193787530">(Apr 13 2020 at 16:05)</a>:</h4>
<p>I'd say <code>P-medium</code></p>



<a name="193787660"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193787660" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193787660">(Apr 13 2020 at 16:06)</a>:</h4>
<p>although is a regression</p>



<a name="193787689"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193787689" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193787689">(Apr 13 2020 at 16:06)</a>:</h4>
<p>but given it's an error related to the location of the reported error and already a stable to stable thing ... I'd go with <code>P-medium</code></p>



<a name="193792608"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193792608" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Léo Lanteri Thauvin <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193792608">(Apr 13 2020 at 16:52)</a>:</h4>
<p>To me <code>P-high</code> seems too much</p>



<a name="193792694"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193792694" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Léo Lanteri Thauvin <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193792694">(Apr 13 2020 at 16:52)</a>:</h4>
<p>But we’d like it fixed, it’s a diagnostic thing, and a regression, so <code>P-low</code> is not enough</p>



<a name="193792714"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193792714" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Léo Lanteri Thauvin <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193792714">(Apr 13 2020 at 16:52)</a>:</h4>
<p>So I’d also go with <code>P-medium</code></p>



<a name="193795376"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193795376" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193795376">(Apr 13 2020 at 17:17)</a>:</h4>
<p>agreed then :)</p>



<a name="193795420"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193795420" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193795420">(Apr 13 2020 at 17:18)</a>:</h4>
<p>Yeah, doesn't seem super high priority to me</p>



<a name="193795467"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193795467" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193795467">(Apr 13 2020 at 17:18)</a>:</h4>
<p>I'm testing to see what the previous behavior was</p>



<a name="193795775"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193795775" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193795775">(Apr 13 2020 at 17:20)</a>:</h4>
<p>ok, let's go with <code>P-medium</code> then, anyway, if someone disagrees we can always revisit this</p>



<a name="193795873"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193795873" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193795873">(Apr 13 2020 at 17:21)</a>:</h4>
<p>Previously you'd get this <code>thread 'main' panicked at 'capacity overflow', src\liballoc\collections\vec_deque.rs:385:9</code></p>



<a name="193795910"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193795910" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193795910">(Apr 13 2020 at 17:21)</a>:</h4>
<p>But <code>RUST_BACKTRACE=1</code> shows the right stuff</p>



<a name="193795925"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize%20%2370963%20regression%20on%20span%20for%20panics%20due%20to%20tra/near/193795925" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/227806-t-compiler/wg-prioritization/topic/I-prioritize.20.2370963.20regression.20on.20span.20for.20panics.20due.20to.20tra.html#193795925">(Apr 13 2020 at 17:21)</a>:</h4>
<p>+1 for <code>P-medium</code></p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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